Yeah, I have....

Once I smoked some really potent ganja in this guy's kitchen on a Friday night, and I was so baked I felt like I was being led by fairies (non-literally)...so I walk past a mirror and then I stop to look at myself, and my whole face turns blue before my eyes, and then various other colours, and other patterns swirl around. Then I sit down at the kitchen table again and the guy I'm smoking with looks like he has shit jumping around his face.